Etirec, Judicial Inquisitor

Eminence — Whenever you activate an ability of a
Clue, if Etirec, Judicial Inquisitor is in the
command zone or on the battlefield, you may pay
{w/b}. If you do, each opponent loses 1 life and
you gain that much life.
At the beginning of your upkeep, you may pay
{1}. If you do, investigate. (Create a colorless Clue
artifact token with "{2}, Sacrifice this artifact: Draw
a card.")